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Homework Help: Probably an easy work problem

  1. Sep 5, 2006 #1
    a skier of mass 72.9 kg is pulled up a slope by a motor-driven cable. The acceleration due to gravity is 9.81 m/seconds squared. How much work is required to pull the skier 63.5 m up a 34 degree slope (assumed to be frictionless) at a constant speed of 2 m/seconds squared. Answer in units of J.



    HELP me out please:surprised
     
  2. jcsd
  3. Sep 5, 2006 #2
    calculate the change in gravitional energy.
    where must this energy come from?
     
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